the slope tells us the speed: speed = 20m = 5m/s 4s
DESCRIPTION
Distance Time graphs. The slope tells us the speed: speed = 20m = 5m/s 4s. Theo goes for a short bike ride…. Q1. What is the distance travelled in the first 5 sec? Q2. What is the speed during part A? Q3. How long did he stop for? Q4. What was his speed during part C?. - PowerPoint PPT PresentationTRANSCRIPT
SPEED
speed (m/s) = distance (m) time (s)
Speed is the distance travelled in acertain time.
eg How fast did the cheetah run?
time = 5 sec
speed = dist = 20 = …… m/s. time 5
20m
SPEED
speed (m/s) = distance (m) time (s)
Speed is the distance travelled in acertain time.
eg How fast did the cheetah run?
time = 5 sec
speed = dist = 20 = …… m/s. time 5
20m
Calculate these speeds:
1. A plane flies 2000m in 10sec.
2. A car travels 1km in 50sec.
3. An explosion is heard 2 seconds after seeing a building crumble 660m away. What is the speed of sound?
4. The sun emits a solar flare. 8.4 Mins later a burst of X-rays is detected on earth. What is the speed of light? ( Distance from earth to sun is 150 million km)
DISTANCE TIME GRAPHS
distance (m)
ii 20
10 i. iii
0 5 10 15 20 25
time (sec)
i. run 20m into jungle speed = dist = ? = ? m/s time ?
ii. see a snake & stop for ……….. sec.
iii. walk backwards speed = dist = -20m = -1.3m/s time 15s
DISTANCE TIME GRAPHS
distance (m)
ii 20
10 i. iii
0 5 10 15 20 25
time (sec)
i. run 20m into jungle speed = dist = ? = ? m/s time ?
ii. see a snake & stop for ……….. sec.
iii. walk backwards speed = dist = -20m = -1.3m/s time 15s
DISTANCE TIME GRAPHS
distance (m)
ii 20
10 i. iii
0 5 10 15 20 25
time (sec)
i. run 20m into jungle speed = dist = ? = ? m/s time ?
ii. see a snake & stop for ……….. sec.
iii. walk backwards speed = dist = -20m = -1.3m/s time 15s
The slope tellsus the speed:
speed =
20m = 5m/s 4s
Distance Time graphs
Q1. What is the distance travelled in the first 5 sec?Q2. What is the speed during part A?Q3. How long did he stop for?Q4. What was his speed during part C?
Theo goes for a short bike ride….
Draw a distance:time chart for your journey to school